/**
 * Created by IntelliJ IDEA.
 * User: zm
 * Date: 2023/4/7
 */
public class Demo13 {
    public static void main(String[] args) {
        //大小写转化
        char ch = 's';
        if(ch >= 'a'  && ch <= 'z'){
            ch = (char) (ch - 32);
        }
        System.out.println(ch);

    }
}
